DNS "bad" forwarders not timing out

Document ID:3445809

Creation Date:05-Oct-2006

Modified Date:27-Apr-2012

Micro Focus Products:

NetWare

Environment

Novell DNS
Novell NetWare 6.5 Support Pack 5

Situation

Two fowarders are configured and one of the dns servers in the list
is down. If the DNS server sends a request to the forwarder
that is down it will wait 2 seconds before using the other
forwarder.
For every DNS request that is made and we are not authoritative for
we will send to the forwarders. If we send to the forwarder
that is down we will timeout in 2 seconds causing slowness to
resolve.

Resolution

An enhancement to DNS has been entered to mark the "bad" dns server
as down and not make requests to it but periodically check to see
if it has come back.